First would be Yuuki Kuran from Vampire Knight- a useless idiotic...THING!
Second- Sara Mudo from Angel Sanctuary, she doesnt know that sleeping with her blood related bro can result in a highly defected baby :(
complete idiot....shoulda died...
Third-Miaka Yuki...her brain might be filled of rotten food instead of brain cells...
alot more that doesnt come to mind right now...

To be truthful I never liked Flay... and Shirley was similar to her but Shirley was... better.

care to explain? Because I don't see how they are "clueless"

Shirley was better because her intentions were pure. Flay, on the other hand, was not really interested in Kira, only making him fight for her revenge, and willing to literally whore herself out to him to do so.

I wouldn't say Shirley was "clueless", as Lelouch actually did care for her (although perhaps not with the same depth). He simply felt she was safer at a distance (and he was correct).

Frankly, I think Shirley gets a bad rap. The same as many a "ordinary" character among a cast of extraordinary characters.

that girl from it started with a kiss the anime GRRRRRRRRRRRRRRRRRRRRRRRRRRR she was and is soooooooooooooooooooooooooooooooooooo stupid -_- I never felt bad for her and I actually wished she had a very sad and awful ending.